waxbom



COAL MINING APPARATUS Original Filed Dec. '26, 1923 2 Sheets-Sheet l magm -mum \Nifnassesl I gvlspmn Q PIW )k g Magic/ 0M ATTORNEYS c. E, WAXBOM March 3, 1931. Re; 17,986

GOAL MINING APPARATUS Original Filed Dec. 26, 1925 2 Sheets-Sheet 2 V as iii" 3a 31 13 w 2 2 .5243 2 Wifnesses Q EW Reissued Mar. 3, 1931 UNITED ST TES CHARLES E. WAXBOM, or commas, onro, ASSIGNOR TO THE JEFFREY MAiiUEAcQ PATENT oFFicE/ TUBING COMPANY, OF COLUMIBU"S, OHIO, CORPORATION OF OHIO COAL-MINING APPARATUS Original No. 1,582,949, dated May 4, 1926, Serial No. 682,726, fi led December 26, 1923. Application for reissue filed June 25, 1930. Serial No. 463,798. g V

The present invention relates to certain new and useful improvements in mining machines, and particularly to the class ofmining machines in which each is provlded w th a main frame adapted to rest upon and slide in any direction over the mine floor, an elongated horizontally extending cutter arm attached to said frame, and means to move and guide said main frame over the mine floor to cause the cutter arm toengage the coal to cut it. p

The especial object of this invention 1s to provide, in a machine of the class described, improved feeding and guiding mechanism whereby the machine maybe. moved over the mine floor at the speed most appropriateto the purpose intended.

The preferred embodiment of my invention is disclosed in the following specificat on and illustrated in the accompanying drawings of which, a

Figure 1 is a plan view of the machine, certain parts being broken away to reveal other parts. v

Figure 2 IS a side elevation of the machine illustrated in Figure 1.

Figure 3 is a somewhat diagrammatic horizontal sectional view showing the arrangement of gearing in the machine illustrated 1n Figures 1 and 2.

Figure 4 is a vertical sectional vlew taken alon the line IV-IV of Figure 1.

Like numerals refer to similar parts in the several figures. I

Referring to the drawings the numeral 1 indicates the mainframe casting upon whlch the operating parts of the machme are mounted. This main frame casting 1s attached to the upwardly turned flanges 2 of the skid pan 3 which is composed of a rolled steel plate, and which serves as a broad supporting base adapted to rest upon and slide 1n any direction over the floor of the mine. Attached to the main frame casting 1, and projecting longitudinally therefrom is an elongated cutter arm 4, of the well nown construction, having guideways wherem travels the cutter chain 5 in the manner common to mining machines of this type. The cutter chain 5 engages and is actuated by a sprocket wheel 6 rotatively mouted upon the vertical shaft 7 which is rigidly attached to'the main frame of the machine. Suitable clutch mechanism is provided by which the sprocket wheel 6 may be connected with the power devices of the machine. Mounted upon the main frame 1'is a motor8 which may be of any preferred construction suitable to the conditions under which the machine operates.

For purposes of illustration 1- have shown an electric motor having an armature shaft 9 to which is secured the bevel pinion 10. The pinion 10 engages a master gear 11 rigidly connected with a sleeve 12 mounted upon the vertical shaft 7, and this sleeve 12 constitutes the driving-member from which the several elements of'the machine are actuated. As all of these devices are well understood in the mining machine art, and as they form no part in the present invention, further description of them is not thought to be required at this time.

Formed on the sleeve 12 is a worm 13 which engages a worm wheel 1-1 keyed to the horizontal power shaft 15 which is supported in journal bearings 16 and 17 of the main frame. Mounted. for free rotation upon the shaft 15 oneat each side of the worm wheel 14, are two winding drums 18 and 19 commonly known as the feed drum and the retarding drum respectively, and to each of these drums is attached a flexible cable 20 and 21 respectively, adapted'to be connected to a suitable abutment external of the machine towards which the machine may be drawn by the winding of the cable upon its respective drum. Means which will now be described, is provided for the actuation of the drums 18 and 19 to wind their respective cables at relatively high speed, or at relatively low speed, to permit the unwinding of the cables under controlled frictional resistance, or to permit the said cable to freely unwind.

Splined to the shaft 15 and slidable longitudinally thereof is a hub 22 which con stitut-es the driving member of a multiple disc friction clutch, the driven member of which is formedby two discs 23 and 24 rotatably mounted upon the shaft 15 one at each side of the hub 22 and having inwardly projecting annular flanges 25 and 26 respectively. The

release the discs 27 inf well*understood. A spun p upon- 'a suitably supported shaft '30 =eiiig'age's hub-22 and flanges 25 and 26 are formed with longitudinally extending keys arranged to engage the appropriate notches in the fric tion discsfi'fitoc'enneot the driving and driven 'el-eine'ntsof the-clntch"together inthe manner well understoodin the art.

the ring gear 28 in one direction willdraw the discs ifirand 24 'togetlrer to compress. the disc-,- tion discs 27 to actuate therclzutchgzamd-mota i.

tion of the ring gear 28 in theopposite direction will spread the discs 23 and 124 ap t to the ring gear 28 and a hand-wlieellgii atta che'd to the shaftf'30} afiords 1 convenient mean s for t'he rotationoffthe ringge-ar-QS andthe' control of the Eviction-flu disc24 is a hub 89*inw-h is formed a ga'oove which engages a shifting lever by the n' aiiipiilation of' *whfiehf the entire clutch mechanism rm-m t'he 'face ofth'ehu'b 32 are "cluteh teeth Madapted to engage with similar teeth on the end of a {spur pinion 35 wh-ich is shaft 15'*tobe driven a cab'le winding direction at a speed greatly reduced from-that of the power shaft- 15. Projectingfrointhe outer face o'f 't'he disc area plurality of studs 40 adapted to-engage suitable apertures 41in the hub of the feed drnnrl8b When the studs lO-are in engagement with the apertures 41 the feed d runrlS-is di rcetly connected 'withthe shaft 15 to revolve in. a a cable winding direction*at'thespeed of the shaft. By themanipnlation of-the shifting lever 33 th'e feed dru1n18niav be directly connected to the shaft to windtlie cable'at a relatively high speed or it may Ice-connected through the gears 35,133, 38 'and39 towindithe eable at a relatively low speed, and by the'm-a'nipnlation of the'hand wheel 31' thefriction clutch may be actuated-to positively drive the feed drum '18 to wind thefcahle, or the pressure upon the friction discs 27 maybe s ufii'c-ien tly released-to permit the cable to unwind under harid wh eel 31. By "shifting the friction clutch to a meutral position midway between The outcr -sur face of the fianges25 and 26 arethreaded with rightia fii leftliandscrejwxi a1 e'adsinf gage-merit with "cooperating threads i'n""the ring gear 28in such manner thaQ-notggtiornof drum " Formed o'n the winding drum 18 and the spur pinion the winding drum may be entirely relieved from any retarding eiiect due to the action of the friction clutch.

,T,he" mec,lianism for the actuation of the retarding drumfifi is siibst-antiall'ysimilar to thatprovided for the actuation of the feed 'Ajric tion clutch of the same genst'r "a 1 ftfaho described is up'onth'e ft 15 between the re- ;tandi-ngdrrgm 19 and the worm wheel 14. Its

driving disc 42 is provided With=lngs143 adapted; to engage suit-able:apertures in-t the irejtanding drumQlQ and its driving disc 44 .1S provided with a hub 45 having a groove "\Kh'lCh engages a shifting leyer '46. :Fcrmed on "the hnb 45 arekjaw teeth '47 which engage 'siinilar teeth ont he spur-pinion which is freely-i 'otati-ibl'e upon thes'ha'ft 15;];T-he pinion 484s connected through t'l'ie spur gear49;;

and pinion- 50' with aspur gear 1 formed inteing discs 42 and l l are arrangedto be drawn togetlrerbythe rotation of: a ring gear 52 in the m-anner above described; -A' spur. gear 53 ag which meshes with the ring gear 52 1s atrelatively high speed o r- -at a: relatively low Suitable guide sheaves 56, 57, 58, .59- and GOa're mounted npon t'he frame ofthe 'maa chi-he, and the cables- 20 andi21 after passing around any preferred guide sheaves may-"be "led in' any preferred direction from the machine and attached to suitably'. positioned an 'c'ho'r jacks in theqnannerwvhich is We'llfundersjt'ood'in the mining:machineiarti Owing to the similarity-of the po w en transmission elements associated with the winding drums -1S- and -19,-the cahles'20 and army he simultaneously or sep aratel-v wound upon the respe'ctive drums 3 at relatively: high: handling speedor at the relatively low feeding" speed or either or both Ofthernzmay he p'ermitted to nn'windmnder' optionally controlled resistance"'0rw1thout such esista nc'e as occasion I at 1-; e1 aim is 1.'=In machine of the 'class described, a

main frame movahle over amine floor; a motor mounted on saidhame,- a pair. of winding elements mounted on said 'frame:,"'plural speed traiismission mechanism adapted to he 'dri'ven' by sai'dmotor, and con-t rollableconnec- "tions between said meehanism and-winding a frictional resistance the degree -of which nnw be controlled by manipulationof the elements wher'eby each elementmayihe driven -gra1 with the 1 retarding drum 19; I The 'd'rivspeed, o'r'fto .perinit the unwinding-30f said {cable under a controlled frictional resistance or to permitithe 'freeunwinding of the cable.

ing an" independent friction clutch associated .with each winding element and adapted to control the rotation thereof at either speed. 2. In a machine of the class described, a

main frame movable over-a mine floor, a m0- I tor mounted on sa1d'frame,a pair of'wmding elements mounted coaxially' on said frame, a plural speed transmission mech-- pendent friction clutch associatedwith each winding elementand adapted to control the rotation thereof at either speed.

3. In a machine of the class described, a main frame movable over a mine floor, a motor mounted on said frame, a pair of winding elements mounted on said frame, plural speed transmission mechanism adapted to be driven by said motor, and controllable connections between said mechanism and winding elements whereby each element may be driven at either of a plurality of speeds while the other is simultaneously driven at either of a plurality of speeds, said connections including an independent friction clutch associated with each winding element in coaxial relation thereto and adapted to control the rotation thereof at either speed.

4. In a machine of the class described, a main frame movable over a mine. floor, a motor mounted on said frame, a pair of winding elements mounted coaxially on saidframe, plural speed transmission mechanism adapted to be driven by said motor, and controllable connections between said mechanism and winding elements whereby each element may be driven at either of a plurality of speeds while the otheris simultaneously driven at either of a plurality of speeds, said connections including an independent friction clutch associated with each winding element in coaxial relation thereto and adapted directly to their associated winding elements,

reduction gearing associated with each of said winding elements, and means to mdependently connect the driven elements of said clutches to the reduction gearing of their associated drums, whereby'the winding elements may be simultaneously driven correspondingfto that of the first or at a while driven at either speed.

at the same or different speeds and independently controlled at either speed through their respective clutches. r

'6. In a mining machine, the combination of a main frame movable over a mine floor, motor mounted 011 said frame, feeding and guiding mechanism comprising a pair of Windingelements mounted on said frame, and plural speed driving connections for each of said winding elements whereby either may be driven at a relativelyfastor at a relativelyslow speed in the winding direction while the other is simultaneously driven in the winding direction at a speed different speed, said connections including a separate frictionclutch associated with each of said winding elements and adapted to independently control-the rotation of the latter 7. In a mining machine,the combination of a main frame movable over a mine. floor, a motor mounted on said frame, feeding and guiding mechanism comprising a pair of Winding elements coaxially'mounted on said frame, and plural speed driving connections for each of said winding elements whereby either may be driven at a relatively fast or at a relatively-slow speed in the winding direction while the other is simultaneously driven in the winding direction at aspeed corresponding to that of the first or at a different speed, said connections including a separate friction clutch associated with each of said winding elements and adapted to in; dependently control the rotation of the latter While drivenat either speed;

8. In a mining machine, the combination of a mainframe movable over a mine floor, a motor mounted on saidframe, feed ing and guiding mechanismcomprising a pair of winding elements mounted on said frame, and plural speed driving connections for each of said winding elements whereby either may be driven at a relatively fast or at :y a relatively slow speed in the winding di rection while the other is simultaneously driven in the winding direction at. a speed corresponding to that of the first or at a different speed, said connections including a separate friction clutch associated with each of said winding elements and adapted to independently control the rotation of the latter while driven at either speed, said clutches beingcoaxially mounted. I

9.' In a mining machine, the combination of a main frame movable over a mine floor, a motor mounted on said frame, a horizontally extending shaft journaled on said frame, feeding and 'guidlng mechanism comprising rectionawhile are {saw as {simultaneously driVn-,;in:tlie winding dinectidnzata; speed corresponding .to that of tltieafirstworatsa' difl ere'nti speed, said connect-ions including a separate friction; cli'it'ch on said shaft associated witlaanach of said winding elements and a'dlamted t'o 5 independently; control therjot a,- tion of Ithelatterwhile driven ateit-her speed,

10.- Ina mininrgmachine-of the class described, the combinationfwith a -main, frame adapted to Test uponand slide inanydirection over .the ;minei-fi,oor,-;of an elongated kerf cutter-projecting horizontally from said frame,, taro; winding drilms, mounted, upon said frame with their axes extending.transversely" thereof, power devices npon ,{the fra'lm'e, and clutch mechanismzadapted,,to connect saiddrun isfwith said-power devices to cause said drums to revolve i i-winding 380 direction either simultaneously or separately at relatively high speed -or at relatively low 7 speed and a-frictionally controlled-med as nism for 1 each, drum and adapted to -connect saidfdrums separately or simultaneously 1@w'with said powergdevices and-to control the speed of saidyidru'ms independently of each 11. fInamining machine of the class described, the combination with .a main frame '0 adapted to restupon and slide 2 in I any direction over the mine floor, of an elongated kerf cutter projecting from said frame, power devices upon the frame comprising a; horizontal transversely extending shaft, two

I 1 5vwindingdrumsmounted'upon said shaft for free rotation. thereon, and; clutch mechanism on said shaft-adapted toconnect either or -bot'h;=of--saidwinding drums directly to said shaftotorotate therewith or indirectly with said shaft to rotate thereon in the same-direotionbut at'reducedspeed; 1* v y I 12. In a mining machine off-the class described,t-he combination with: a main frame,

of an elongated kerf cutter proj ecti'ngfrom said frame, power devices uponthe frame comprising a1horizonta-ltransversely extend- 'ing shaft, tw'o winding drums mountedupon said-shaft for free rotation thereon, and a separate frictionally. controlled mechanism for. each drum mounted on said shaft and adapted to-connect said drums separately or -simultaneouslywith said power devices and to"controlthe speed of said drums independently of eachot-her. v I

13. In a mining machine ofthe' class .described} the combination 1 withv a, main frame adapted to rest" upon and slide in any: direct ibn over the mine: floor, of anelongated kerf cutter projecting horizontally from said rnine;upoit-ver devices: upon the frame comprising: horizontal' transyersely' extending shaft, two winding drums mounted upon said sh aft' for free? rotation rela-tive thereto, "and clutch mechanism adapted toxc'onnect either or "both of "said Winding drums directly to mechanism. 417'. In a mining machi ne ofthe class" described=,the combination with a main frame,

said 5 shaft r otate therewith or indirectly with said sha-f-ti to'rotate thereon in the same direction but at reduced SPBQd or to' permit:

theirrotation inthe opposite direction under optionally controlled resistance or to permit theirrotation Without saidresistanceas and for.theipurpose set forth; c. 1 31%. In a mining mach ne ribed, the combination with a main frame ladapted to rest upon andslid'e: in any-direction over the mine floor, of a longitudina-lly' extending ikerfcntter projecting horizon-tal- 1y; from}; sai-d;=frame,; power devices upon the f nale-comprising a shaft, .a-w indin-g drum mounted nfpfon sa i'd shafts-for ffr'ee rotation relative thereto, transmission mechanism adaptedwvto. connect said winding drum with said shaft comprising acl utch-element slidably mountcdmpone said shaft and adapted to be moved in onedirect-ion to; connect said winding. d 'rum directly withsaid clutch element j to revolve therewith, and to be noye d 'in. the oppos te direct on] to :connect said winding drum indirectly with said clutch elementto revolve-inthesame direction-at reduced speed, and frictional devices-to connect said clutohne'lement with said shaft as from said frame, power devices upon the frame comprising -a shaft, a winding drum. I

mounted-upon; sa-idjshaftfor freerotation said clutch element to I revolve therewith and to ihe moved in the. opposite direction toconnect said'winding druniindirectly with said driving-element to revolve i-n-the'same direction at reduced speed-frictionaldevices to. connect said clutch element withsaid shaft,

meansto slide said clutch element longitudinally the shaft; and meansto control saidfriotionaldevicesas andffor the purpose,

-setfor1th.;-- I v v 1 f 16. In; amining machine ofthe class describedj, thecombination-With a main frame. of an elongated kerf :cut't-er projecting from said frame, power devices, upon the frame comprising ahorizontal transversely: extending shaft, itwo winding drums mounted upon said shaft for free'rotation thereon, speed reducing gearing betweenthe shaft and drums,

and a separate clutchymechanism for eachv drum, and speed reducing mechanismimounted on said shaft and lncluding means'to optionally varyresis'tance offered by the clutch of the I class de- I relative thereto, transmission mechanism J adapted I connect said winding drumwith said shaft and adapted tobe moved in one direction to I connect said drum directly with Y hand.

CHARLES E. WAXBOM. 

